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扩大了交叉状结合的基质范围,使得长l-RNAs的高效合成成为可能
Xuan Han1, Jonathan T Sczepanski1,2
1Department of Chemistry, Texas A&M University College Station Texas 77843 USA jon.sczepanski@chem.tamu.edu.
RSC chemical biology
|January 9, 2025
概括
合成长镜像RNA (l-RNA) 现在更容易获得. 新的化学反应激活了l-RNA片段,以使用交叉合酶 ribozymes 进行高效连接,从而能够创建更长的人工遗传聚合物.
科学领域:
- 生物化学 生化学
- 合成生物学 合成生物学
- 分子生物学分子生物学
背景情况:
- 镜像l-oligonucleotides是有前途的核酸类似物和人工遗传聚合物.
- 合成长l-RNA序列的挑战阻碍了它们在研究和医学中的更广泛采用.
研究的目的:
- 开发一种新的策略,通过连接较短的片段来组装较长的l-RNA.
- 克服当前l-RNA合成方法的局限性.
主要方法:
- 使用交叉化酶 ribozymes 进行碎片连接.
- 使用腺单酸盐 (AMP) 或二酸盐 (ADP) 开发了5'-单酸化l-RNA的新基质激活化学物质.
- 在温和的水性条件下执行激活和结合反应.
主要成果:
- 通过AMP或ADP有效激活l-RNA,产生5'-adenosyl (二或三) 酸l-RNA.
- 显示了激活l-RNA与 ribozyme 中介结合的兼容性.
- 通过单个结合事件成功组装了一个129核酸l-RNA分子.
结论:
- 这种新的策略使长l-RNAs的高效合成成为可能.
- 这些方法增加了研究人员对长l-RNAs的可访问性.
- 促进了基于l-oligonucleotide的技术的扩展.
相关概念视频
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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...
02:35RACE - Rapid Amplification of cDNA Ends
Rapid Amplification of cDNA Ends, or RACE, is one of the most effective methods to obtain a full-length cDNA from an mRNA sequence between a known internal region to the unknown sequence at the 5’ or 3’ end. The unknown region is cloned in the cDNA by a gene-specific primer that binds the known end, and a hybrid primer that attaches a predefined anchor sequence to the unknown end of the cDNA. The sequence in between is amplified by PCR with an anchor primer and a gene-specific primer.
Since the...
Since the...